<!-- <!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <div id="app">
        <h3>请选择你喜欢的专栏</h3>
        <label v-for="(item, index) in arr" :key="index">
            <input type="checkbox" v-model="checkArr(index)" :value="item">
            {{ item }}
            <ul>
                <li v-for="item in checkArr" :key="item">{{ item }}</li>
            </ul>
        </label>
    </div>
    <script src="./lib/vue.js"></script>

    <script>
        new Vue({
            el: '#app',
            data: {
                arr: ["科幻", "喜剧", "动漫", "冒险", "科技", "军事", "娱乐", "奇闻"],
                checkArr: []
            }
        })
    </script>
</body>
</html> -->

<!DOCTYPE html>
<html lang="en">
<head>
 <meta charset="UTF-8">
 <meta http-equiv="X-UA-Compatible" content="IE=edge">
 <meta name="viewport" content="width=device-width, initial-scale=1.0">
 <title>Document</title>
</head>
<body>
 <div id="app">
  <h3>请选择你喜欢的专栏</h3>
  <label v-for="(item, index) in arr" :key="index">
   <input type="checkbox" v-model="checkArr" :value="item">
   {{ item }}
  </label>
  <ul>
   <li v-for="item in checkArr" :key="item">{{ item }}</li>
  </ul>
 </div>

 <script src="./lib/vue.js"></script>
 <script>
  new Vue({
   el: '#app',
   data: {
    arr: ["科幻", "喜剧", "动漫", "冒险", "科技", "军事", "娱乐", "奇闻"],
    checkArr: []
   },
  })
 </script>
</body>
</html>